@article{30950,
      author       = "Colvocoresses, Alden P. and XIII. Congress of the
                      International Society for Photogrammetry, Helsinki, 1976.
                      Commission I",
      title        = "Status Report on Landsat as a Source of Cartographic Data 
                      ",
      year         = "1976",
      note         = "1 sv.",
}